Propagation of sub-tropical plum (Prunus salicina Lindl.) by stenting and application of IBA
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Date
2018-05
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The present investigation was carried out at Horticulture Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar (Uttarakhand) during January, 2017 to January, 2018. The experiment was laid out in Factorial Randomized Block Design with two factors comprising of five stents/cuttings (Kala Amritsari stents, Satluj Purple stents, Kabuli Green Gauge cuttings, Kala Amritsari cuttings, Satluj Purple cuttings) and four IBA concentrations (Control, 500 ppm, 1000 ppm and 1500 ppm). Thus, 20 treatment combinations were tested in three replications. The observstions in respect of days to sprouting, duration of sprouting, vegetative growth, rooting and other plant attributes were recorded. Findings of the present investigation revealed that Kala Amritsari cuttings takes the minimum days to sprouting (16.67 days) while, Kabuli Green Gauge cuttings showed the minimum sprouting duration (21.25 days) and maximum sprouting (92.50%) the Kala Amritsari stents were estimated to be highest in terms of plant height (111.38 cm), plant thickness (12.84 mm), number of leaves (151.05), fresh weight of shoot (103.83 g), dry weight of shoot (54.38 g), root thickness (6.02 mm), number of primary root (13.12), number of secondary root (22.51), length of primary root (27.51 cm), length of secondary root (13.01 cm), fresh weight of root (73.50 g), dry weight of root (42.08 g), success percentage (66.67%) and minimum in mortality percentage (33.33%). The IBA treatment @ 1000 ppm was found to induce the earliest sprouting (22.40 days), minimum duration of sprouting (26.93 days), maximum sprouting (94%), plant height (102.67 cm), plant thickness (10.34 mm), number of leaves (136.80), fresh weight of shoot (92.10 g), dry weight of shoot (46.62 g), root thickness (5.56 mm), number of primary root (11.68), number of secondary root (21.42), length of primary root (26.63 cm), length of secondary root (12.13 cm), fresh weight of root (62.95 g), dry weight of root (34.32 g), success percentage (77.50%) and minimum in mortality percentage (22.50%). The interaction effects of stents/cuttings and IBA showed that the minimum number of days to sprouting under Kala Amritsari cuttings treated with 1000 ppm IBA (15 days) while, the minimum duration of sprouting was recorded with Kabuli Green Gauge cuttings treated with 1000 ppm IBA (18.67 days). The Kala Amritsari stents treated with 1000 ppm IBA recorded the maximum sprouting (96.67%), plant height (118.10 cm), number of leaves (172.33), fresh weight of shoot (115.23 g), dry weight of shoot (60.20 g), root thickness (7.29 mm), number of primary root (14.80), number of secondary root (24.57), length of primary root (29.82 cm), length of secondary root (15.32 cm), fresh weight of root (84.97 g), dry weight of root (47.90 g), success percentage (85.00%) and minimum in mortality percentage (15.62%). However, Kala Amritsari stents treated with 500 ppm showed, the maximum plant thickness (14.57 mm). Thus, it can be concluded that stenting perform better than the cuttings with respect to the overall growth and success of stenting. Therefore, the stenting of cuttings viz., Kala Amritsari (KGG+KA) stents along with application of 1000 ppm IBA is recommended for the production of quality plants of plum.
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